A U.S. Air Force B-1B Lancer, assigned to the 37th Expeditionary Bomb Squadron, deployed from Ellsworth Air Force Base, South Dakota, prepares to take off from Andersen AFB, Guam, Sept. 23, 2017. This mission was flown as part of the continuing demonstration of the ironclad U.S. commitment to the defense of its homeland and in support of its partners and allies. (U.S. Air Force photo/Staff Sgt. Joshua Smoot)